SST49LF040 Silicon Storage Technology, SST49LF040 Datasheet - Page 16

• Manufacturer Part Number: SST49LF040
• Description: 4 Mbit LPC Flash
• Manufacturer: Silicon Storage Technology

TABLE 7: O
TABLE 8: S
©2001 Silicon Storage Technology, Inc.
Mode
Read
Program
Erase
Reset
Write Inhibit
Product Identification
Byte-
Program
Sector-
Erase
Block-Erase
Chip-Erase
Software
ID Entry
Software
ID Exit
Software
ID Exit
Command
Sequence
1. X can be V
2. Device ID 51H for SST49LF040
1. LPC mode uses consecutive Write cycles to complete a command sequence; PP mode uses consecutive bus cycles to complete a
2. YYYY = A[31:16]
3. PA = Program Byte address
4. SAx for Sector-Erase Address
5. BAx for Block-Erase Address
6. Chip-Erase is supported in PP mode only
7. SST Manufacturer’s ID = BFH, is read with A
8. Both Software ID Exit operations are equivalent
command sequence.
In LPC mode, during SDP command sequence, YYYY must be within memory address range specified in Figures 4 and 5.
In PP mode, YYYY can be V
With A
8
8
18
6
-A
OFTWARE
1
PERATION
IL
XXXX XXXXH
YYYY 5555H
YYYY 5555H
YYYY 5555H
YYYY 5555H
YYYY 5555H
YYYY 5555H
= 0; 49LF040 Device ID = 51H, is read with A
or V
Addr
Cycle
IH
1st
2
, but no other value.
1
C
M
Data
OMMAND
AAH
AAH
AAH
AAH
AAH
AAH
F0H
ODES
RST#
IL
V
V
V
V
V
V
X
or V
IH
IH
IH
IL
IH
IH
YYYY 2AAAH
YYYY 2AAAH
YYYY 2AAAH
YYYY 2AAAH
YYYY 2AAAH
YYYY 2AAAH
S
IH
Addr
ELECTION
.
S
EQUENCE
Cycle
2nd
2
1
0
OE#
V
V
V
V
V
= 0.
X
X
Data
IH
IH
IL
IL
IL
55H
55H
55H
55H
55H
55H
(PP M
(A
LL
YYYY 5555H
YYYY 5555H
YYYY 5555H
YYYY 5555H
YYYY 5555H
YYYY 5555H
ODE
Addr
I
0
NTERFACES
= 1.
Cycle
3rd
)
WE#
2
V
V
V
V
V
X
X
16
IH
IH
IH
IL
IL
1
Data
A0H
80H
80H
80H
90H
F0H
)
DQ
D
D
X
High Z
High Z/D
High Z/D
Manufacturer’s ID (BFH)
Device ID
1
YYYY 5555H
YYYY 5555H
YYYY 5555H
OUT
IN
Addr
PA
Read ID
Cycle
3
4th
2
OUT
OUT
2
1
7
Data
Data
AAH
AAH
AAH
YYYY 2AAAH
YYYY 2AAAH
YYYY 2AAAH
Addr
Cycle
5th
2
Address
A
A
Sector or Block address,
XXH for Chip-Erase
X
X
X
See Table 8
IN
IN
4 Mbit LPC Flash
1
Data
Advance Information
55H
55H
55H
SST49LF040
S71213-00-000 11/01 562
YYYY 5555H
Addr
SAx
BAx
Cycle
4
5
6th
2
1
T7.2 562
T8.3 562
Data
30H
50H
10H